The story

After Marci Smith was told she had a malignant brain tumor, she had surgery and then made an appointment with an oncologist to receive chemotherapy and radiation.

But Smith never kept that appointment.

A nagging voice inside her head told her to get a second opinion. In the end, that voice is the reason Smith is getting the right treatment. Read full article »

Elizabeth Cohen is a correspondent with CNN Medical News. Jennifer Pifer, Sabriya Rice, Georgiann Caruso and Miriam Falco contributed to the report.